Surbahar is a string variant of ancient kacchapi (tortoise) veena created by Imrat Khan's great grandfather.
"In the 1950s, we changed the sitar when we reduced the number of strings from seven to six. We played the 'gayaki ang' (a special musical sound) which required full swing of the right hand and the seven strings jangled...," the musician said.
Imrat Khan's 'gayaki ang' is more grounded on the techniques of classical vocals.